Add assertnonce action.

include/evm_runtime/evm_contract.hpp

@@ -91,6 +91,8 @@ class [[eosio::contract]] evm_contract : public contract
    [[eosio::action]] void bridgereg(eosio::name receiver, const eosio::asset& min_fee);
    [[eosio::action]] void bridgeunreg(eosio::name receiver);
 
+   [[eosio::action]] void assertnonce(eosio::name account, uint64_t next_nonce);
+
 #ifdef WITH_TEST_ACTIONS
    [[eosio::action]] void testtx(const std::optional<bytes>& orlptx, const evm_runtime::test::block_info& bi);
    [[eosio::action]] void

src/actions.cpp

@@ -735,6 +735,19 @@ void evm_contract::bridgeunreg(eosio::name receiver) {
     message_receivers.erase(*it);
 }
 
+
+void evm_contract::assertnonce(eosio::name account, uint64_t next_nonce) { 
+    nextnonces nextnonce_table(get_self(), get_self().value);
+
+    auto next_nonce_iter = nextnonce_table.find(account.value);
+    if (next_nonce_iter == nextnonce_table.end()) {
+        eosio::check(0 == next_nonce, "wrong nonce");
+    }
+    else {
+        eosio::check(next_nonce_iter->next_nonce == next_nonce, "wrong nonce");
+    }
+}
+
 #ifdef WITH_TEST_ACTIONS
 [[eosio::action]] void evm_contract::testtx( const std::optional<bytes>& orlptx, const evm_runtime::test::block_info& bi ) {
     assert_unfrozen();

tests/basic_evm_tester.cpp

@@ -344,6 +344,11 @@ transaction_trace_ptr basic_evm_tester::bridgeunreg(name receiver) {
       mvo()("receiver", receiver));
 }
 
+transaction_trace_ptr basic_evm_tester::assertnonce(name account, uint64_t next_nonce) {
+   return basic_evm_tester::push_action(evm_account_name, "assertnonce"_n, account, 
+      mvo()("account", account)("next_nonce", next_nonce));
+}
+
 transaction_trace_ptr basic_evm_tester::pushtx(const silkworm::Transaction& trx, name miner)
 {
    silkworm::Bytes rlp;

tests/basic_evm_tester.hpp

@@ -222,6 +222,7 @@ class basic_evm_tester : public testing::validating_tester
    transaction_trace_ptr bridgereg(name receiver, asset min_fee, vector<account_name> extra_signers={evm_account_name});
    transaction_trace_ptr bridgeunreg(name receiver);
    transaction_trace_ptr exec(const exec_input& input, const std::optional<exec_callback>& callback);
+   transaction_trace_ptr assertnonce(name account, uint64_t next_nonce);
    transaction_trace_ptr pushtx(const silkworm::Transaction& trx, name miner = evm_account_name);
    void call(name from, const evmc::bytes& to, const evmc::bytes& value, evmc::bytes& data, uint64_t gas_limit, name actor);
    void admincall(const evmc::bytes& from, const evmc::bytes& to, const evmc::bytes& value, evmc::bytes& data, uint64_t gas_limit, name actor);

tests/call_tests.cpp

@@ -471,28 +471,86 @@ BOOST_FIXTURE_TEST_CASE(deploy_contract_function, call_evm_tester) try {
   auto to = evmc::bytes();
 
   auto data = evmc::from_hex(contract_bytecode);
-
+  assertnonce("alice"_n, 0);
   call("alice"_n, to, silkworm::Bytes(v), *data, 1000000, "alice"_n); // nonce 0->1
 
   auto addr = silkworm::create_address(alice_addr, 0); 
-
+  assertnonce("alice"_n, 1);
   call_test(addr, 1234, "alice"_n, "alice"_n); // nonce 1->2
+
   auto count = get_count(addr);
   BOOST_REQUIRE(count == 1234);
 
   // Advance block so we do not generate same transaction.
   produce_block();
 
   auto from = evmc::bytes{std::begin(alice_addr.bytes), std::end(alice_addr.bytes)};
-
+  assertnonce("alice"_n, 2);
   admincall(from, to, silkworm::Bytes(v), *data, 1000000, evm_account_name); // nonce 2->3
-  
+
   addr = silkworm::create_address(alice_addr, 2); 
+  assertnonce("alice"_n, 3);
   call_test(addr, 2222, "alice"_n, "alice"_n); // nonce 3->4
+  assertnonce("alice"_n, 4);
   count = get_count(addr);
   BOOST_REQUIRE(count == 2222);
 } FC_LOG_AND_RETHROW()
 
+BOOST_FIXTURE_TEST_CASE(assetnonce_test, call_evm_tester) try {
+  auto alice_addr = make_reserved_address("alice"_n.to_uint64_t());
+
+  // nonce for not opened account is zero.
+  assertnonce("alice"_n, 0);
+  BOOST_REQUIRE_EXCEPTION(assertnonce("alice"_n, 1),
+                          eosio_assert_message_exception, eosio_assert_message_is("wrong nonce"));
+
+  // Advance block so we do not generate same transaction.
+  produce_block();
+
+  open("alice"_n);
+  transfer_token("alice"_n, evm_account_name, make_asset(1000000), "alice");
+
+  evm_eoa evm1;
+  evmc::bytes32 v;
+
+  auto to = evmc::bytes();
+
+  auto data = evmc::from_hex(contract_bytecode);
+
+  // Fail when nonce is 0 but tested with non-zero value
+  BOOST_REQUIRE_EXCEPTION(assertnonce("alice"_n, 1),
+                          eosio_assert_message_exception, eosio_assert_message_is("wrong nonce"));
+
+  assertnonce("alice"_n, 0);
+  call("alice"_n, to, silkworm::Bytes(v), *data, 1000000, "alice"_n); // nonce 0->1
+
+  // Advance block so we do not generate same transaction.
+  produce_block();
+
+  assertnonce("alice"_n, 1);
+  assertnonce(evm_account_name, 0);
+  // Fund evm1 address with 100 EOS, should NOT increase alice nonce, but increase evm nonce.
+  transfer_token("alice"_n, evm_account_name, make_asset(1000000), evm1.address_0x());
+
+  // Advance block so we do not generate same transaction.
+  produce_block();
+  assertnonce("alice"_n, 1);
+  assertnonce(evm_account_name, 1);
+
+  // Advance block so we do not generate same transaction.
+  produce_block();
+
+  // Fail when nonce is non-zero but tested with another value
+  BOOST_REQUIRE_EXCEPTION(assertnonce("alice"_n, 2),
+                          eosio_assert_message_exception, eosio_assert_message_is("wrong nonce"));
+  // Fail when nonce is non-zero but tested with 0
+  BOOST_REQUIRE_EXCEPTION(assertnonce("alice"_n, 0),
+                          eosio_assert_message_exception, eosio_assert_message_is("wrong nonce"));
+
+
+
+} FC_LOG_AND_RETHROW()
+
 
 
 BOOST_AUTO_TEST_SUITE_END()